EN 61198:1994
(Main)Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
Mineral insulating oils - Methods for the determination of 2-furfural and related compounds
Specifies test methods for the analysis of 2-furfural and related furan compounds resulting from the degradation of cellulosic insulation and found in mineral insulating oil samples taken from electrical equipment.
Isolieröle auf Mineralölbasis - Prüfverfahren zur Bestimmung von Fur-fural und verwandten Verbindungen
Huiles minérales isolantes - Méthode pour la détermination du 2-furfural et ses dérivés
Spécifie les méthodes d'essais pour l'analyse du 2-furfural et des dérivés furaniques apparentés résultant de la dégradation de l'isolation cellulosique et trouvés dans les échantillons d'huile minérale isolante prélevés sur des équipement électriques.
Mineral insulating oils - Methods for the determination of 2-furfural and related compounds (IEC 1198:1993)
General Information
Overview
EN 61198:1994 - adopted by CLC and reproduced as SIST EN 61198:1997 - specifies test methods for the determination of 2‑furfural and related furan compounds in mineral insulating oils. These furanic compounds are generated by the thermal and chemical degradation of cellulosic insulation materials used in electrical equipment. The standard provides a consistent framework for sampling and analysis of oil removed from transformers and other oil‑filled apparatus to assess the condition of paper insulation.
Key Topics
- Scope and applicability: Defines the type of mineral insulating oils and electrical equipment from which samples are taken and the purpose of furan analysis for insulation condition monitoring.
- Analytical focus: Procedures and requirements for detecting and quantifying 2‑furfural (2‑furaldehyde) and related furans formed during cellulose degradation.
- Sampling and sample handling: Guidance to ensure representative oil samples and to minimise changes to furan concentrations between sampling and analysis.
- Performance criteria: Requirements for test reproducibility, sensitivity and reporting so results are comparable across laboratories.
- Reference to IEC: The document extract references IEC 1198:1993, indicating alignment with international electrotechnical practice.
Applications
- Transformer condition monitoring: Furan levels are key indicators of ageing or degradation of paper insulation in power and distribution transformers.
- Asset management: Utilities and grid operators use furan testing to plan maintenance, refurbishment or replacement of oil‑filled equipment.
- Quality control & acceptance testing: Manufacturers and test laboratories use the standard to verify oil and equipment condition during production, commissioning or acceptance.
- Forensic investigation: Following electrical incidents, furan analysis helps assess prior thermal or chemical stress to insulating materials.
Who uses this standard
- Electrical utilities and power companies
- Transformer and electrical equipment manufacturers
- Accredited testing laboratories performing oil analysis
- Maintenance and asset‑management engineers responsible for high‑voltage equipment
Related standards (if applicable)
- National adoptions such as SIST EN 61198:1997 reflect the EN/CLC endorsement.
- The EN references IEC practice (IEC 1198:1993 in the extract), indicating harmonisation with international methods for insulating oil analysis.
- Users commonly consult EN 61198 alongside other insulating oil test standards and transformer diagnostic protocols for comprehensive asset condition assessment.
Keywords: EN 61198, 2‑furfural, furan compounds, mineral insulating oils, transformer oil analysis, cellulosic insulation degradation, CLC, SIST EN 61198.
Frequently Asked Questions
EN 61198:1994 is a standard published by CLC. Its full title is "Mineral insulating oils - Methods for the determination of 2-furfural and related compounds". This standard covers: Specifies test methods for the analysis of 2-furfural and related furan compounds resulting from the degradation of cellulosic insulation and found in mineral insulating oil samples taken from electrical equipment.
Specifies test methods for the analysis of 2-furfural and related furan compounds resulting from the degradation of cellulosic insulation and found in mineral insulating oil samples taken from electrical equipment.
EN 61198:1994 is classified under the following ICS (International Classification for Standards) categories: 29.040.20 - Insulating gases. The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-avgust-1997
Mineral insulating oils - Methods for the determination of 2-furfural and related
compounds (IEC 1198:1993)
Mineral insulating oils - Methods for the determination of 2-furfural and related
compounds
Isolieröle auf Mineralölbasis - Prüfverfahren zur Bestimmung von Fur-fural und
verwandten Verbindungen
Huiles minérales isolantes - Méthode pour la détermination du 2-furfural et ses dérivés
Ta slovenski standard je istoveten z: EN 61198:1994
ICS:
29.040.10 Izolacijska olja Insulating oils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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